Remove generated directories with 100s of files.

client/html/generated/html/dartium/SVGGradientElement.dart

Index: client/html/generated/html/dartium/SVGGradientElement.dart
diff --git a/client/html/generated/html/dartium/SVGGradientElement.dart b/client/html/generated/html/dartium/SVGGradientElement.dart
deleted file mode 100644
index 93496838cfee24e3217a6210030a4550306ab2a6..0000000000000000000000000000000000000000
--- a/client/html/generated/html/dartium/SVGGradientElement.dart
+++ /dev/null
@@ -1,28 +0,0 @@
-
-class _SVGGradientElementImpl extends _SVGElementImpl implements SVGGradientElement {
-  _SVGGradientElementImpl._wrap(ptr) : super._wrap(ptr);
-
-  SVGAnimatedTransformList get gradientTransform() => _wrap(_ptr.gradientTransform);
-
-  SVGAnimatedEnumeration get gradientUnits() => _wrap(_ptr.gradientUnits);
-
-  SVGAnimatedEnumeration get spreadMethod() => _wrap(_ptr.spreadMethod);
-
-  // From SVGURIReference
-
-  SVGAnimatedString get href() => _wrap(_ptr.href);
-
-  // From SVGExternalResourcesRequired
-
-  SVGAnimatedBoolean get externalResourcesRequired() => _wrap(_ptr.externalResourcesRequired);
-
-  // From SVGStylable
-
-  SVGAnimatedString get _svgClassName() => _wrap(_ptr.className);
-
-  CSSStyleDeclaration get style() => _wrap(_ptr.style);
-
-  CSSValue getPresentationAttribute(String name) {
-    return _wrap(_ptr.getPresentationAttribute(_unwrap(name)));
-  }
-}